Related Experiment Videos
Malignant fibrous histiocytoma of the auricle: an immunohistochemical and electronmicroscopic study
M Morita1, T Yoshihara, N Narita
1Department of Otolaryngology, Tokyo Women's Medical College, Japan.
Auris, Nasus, Larynx
|January 1, 1992
Abstract:
Malignant fibrous histiocytoma (MFH) is a soft-tissue tumor of late adult life. This tumor is uncommon in the head and neck region. A case of MFH arising in the auricle is presented with immunohistochemical and electronmicroscopic findings. Histologically the tumor was characterized by numerous spindle cells with abundant eosinophilic cytoplasm and many small capillaries. They were positively stained with vimentin, alpha 1-antitrypsin, and alpha 1-antichymotrypsin. Electronmicroscopically, some tumor cells contained abundant lysosomes and others contained numerous filaments.